A Philippine Airline flight bound for Manila from Cebu Mactan International Airport, aborted it’s flight following the discovery of a malfunction in the Aircraft’s ADF or Automatic Direction Finder.
The PR2864 set to depart Cebu at 7:25pm, with 135 passenger had already closed the cabin door, was on the taxi way and the Pilot announce over the PA “cabin crew prepare for take-off”. Instead of taking off the plane returned to the terminal and offloaded it passengers.
ADF (Automatic Direction Finder) is the radio signals in the low to medium frequency band of 190 Khz. to 1750 Khz. It was widely used today. It has the major advantage over VOR navigation in the reception is not limited to line of sight distance. The ADF signals follow the curvature of the earth. The maximum of distance is depend on the power of the beacon. The ADF can receives on both AM radio station and NDB (Non-Directional Beacon). Commercial AM radio stations broadcast on 540 to 1620 Khz. Non-Directional Beacon operate in the frequency band of 190 to 535 Khz.
This is according to a Philippine Airline official Benedict Yap when interviewed by Cebu Media.
According to Edmund Maxilom President and CEO of DNR Offshore and Crewing Service, a passenger on the business class. He was trying to sleep a soon as he got to his seat and fastened his seatbelt. He felt that the plane was taxing and then the plane accelerated as it was to take off but suddenly applied brakes, he was jolted from his seat as well as the other passenger, things we’re toss off and scattered inside the cabin, had he not wearing the seatbelt he could have been thrown-off his seat..
Was it a simple dashboard malfunction or something more?
This post was written with the collaboration of Flor Querubin of Sunstar Super Balita.